Try WD40. WD40 also cleans water streaks from plastic cladding etc. I bought 5L of WD40 from Rufforth Auto Jumble; York (UK) only costing £20 and it has many uses. Browse YouTube for suggestions.
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.